/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:50:20,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:50:20,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:50:20,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:50:20,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:50:20,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:50:20,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:50:20,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:50:20,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:50:20,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:50:20,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:50:20,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:50:20,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:50:20,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:50:20,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:50:20,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:50:20,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:50:20,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:50:20,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:50:20,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:50:20,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:50:20,736 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:50:20,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:50:20,736 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:50:20,737 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:50:20,737 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:50:20,738 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:50:20,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:50:20,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:50:20,738 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:50:20,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:50:20,739 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:50:20,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:50:20,740 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:50:20,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:50:20,741 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:50:20,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:50:20,742 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:50:20,742 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:50:20,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:50:20,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:50:20,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:50:20,955 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:50:20,955 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:50:20,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-03-31 01:50:21,915 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:50:22,129 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:50:22,130 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-03-31 01:50:22,141 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7397b63/bb2db07359454eb7aec35b1d8da1f9d0/FLAGaa036d287 [2023-03-31 01:50:22,512 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e7397b63/bb2db07359454eb7aec35b1d8da1f9d0 [2023-03-31 01:50:22,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:50:22,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:50:22,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:50:22,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:50:22,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:50:22,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:50:22" (1/1) ... [2023-03-31 01:50:22,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d42971e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:22, skipping insertion in model container [2023-03-31 01:50:22,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:50:22" (1/1) ... [2023-03-31 01:50:22,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:50:22,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:50:22,727 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2023-03-31 01:50:22,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:50:22,830 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:50:22,907 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2023-03-31 01:50:22,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:50:23,009 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:50:23,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23 WrapperNode [2023-03-31 01:50:23,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:50:23,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:50:23,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:50:23,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:50:23,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:50:23,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:50:23,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:50:23,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:50:23,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (1/1) ... [2023-03-31 01:50:23,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:50:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:50:23,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:50:23,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:50:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:50:23,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:50:23,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:50:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:50:23,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:50:23,179 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:50:23,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:50:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:50:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:50:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:50:23,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:50:23,338 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:50:23,339 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:50:24,143 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:50:24,157 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:50:24,157 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:50:24,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:50:24 BoogieIcfgContainer [2023-03-31 01:50:24,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:50:24,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:50:24,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:50:24,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:50:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:50:22" (1/3) ... [2023-03-31 01:50:24,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2afc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:50:24, skipping insertion in model container [2023-03-31 01:50:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:50:23" (2/3) ... [2023-03-31 01:50:24,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bb2afc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:50:24, skipping insertion in model container [2023-03-31 01:50:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:50:24" (3/3) ... [2023-03-31 01:50:24,166 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-03-31 01:50:24,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:50:24,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:50:24,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:50:24,236 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5351ec6d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:50:24,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:50:24,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 441 states, 405 states have (on average 1.6469135802469135) internal successors, (667), 436 states have internal predecessors, (667), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 01:50:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-03-31 01:50:24,255 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:24,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:24,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:24,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:24,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1548126346, now seen corresponding path program 1 times [2023-03-31 01:50:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:24,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507209533] [2023-03-31 01:50:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:24,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:24,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:24,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507209533] [2023-03-31 01:50:24,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507209533] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:24,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:24,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:50:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041662845] [2023-03-31 01:50:24,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:24,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:50:24,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:24,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:50:24,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:24,929 INFO L87 Difference]: Start difference. First operand has 441 states, 405 states have (on average 1.6469135802469135) internal successors, (667), 436 states have internal predecessors, (667), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:25,929 INFO L93 Difference]: Finished difference Result 818 states and 1276 transitions. [2023-03-31 01:50:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 01:50:25,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2023-03-31 01:50:25,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:25,938 INFO L225 Difference]: With dead ends: 818 [2023-03-31 01:50:25,938 INFO L226 Difference]: Without dead ends: 407 [2023-03-31 01:50:25,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:50:25,944 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 152 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:25,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1806 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2023-03-31 01:50:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2023-03-31 01:50:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 403 states have (on average 1.5483870967741935) internal successors, (624), 403 states have internal predecessors, (624), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 627 transitions. [2023-03-31 01:50:25,984 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 627 transitions. Word has length 107 [2023-03-31 01:50:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:25,984 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 627 transitions. [2023-03-31 01:50:25,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 627 transitions. [2023-03-31 01:50:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 01:50:25,988 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:25,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:50:25,989 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:25,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash -565920884, now seen corresponding path program 1 times [2023-03-31 01:50:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386348611] [2023-03-31 01:50:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:26,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:26,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:26,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386348611] [2023-03-31 01:50:26,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386348611] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:26,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:26,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:26,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078402283] [2023-03-31 01:50:26,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:26,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:26,213 INFO L87 Difference]: Start difference. First operand 407 states and 627 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:27,358 INFO L93 Difference]: Finished difference Result 1002 states and 1577 transitions. [2023-03-31 01:50:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:27,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 01:50:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:27,362 INFO L225 Difference]: With dead ends: 1002 [2023-03-31 01:50:27,362 INFO L226 Difference]: Without dead ends: 643 [2023-03-31 01:50:27,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:27,364 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 417 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:27,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1277 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:27,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-03-31 01:50:27,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 641. [2023-03-31 01:50:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 637 states have (on average 1.5620094191522762) internal successors, (995), 637 states have internal predecessors, (995), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 998 transitions. [2023-03-31 01:50:27,394 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 998 transitions. Word has length 138 [2023-03-31 01:50:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:27,395 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 998 transitions. [2023-03-31 01:50:27,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 998 transitions. [2023-03-31 01:50:27,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 01:50:27,398 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:27,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:27,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:50:27,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:27,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1327961290, now seen corresponding path program 1 times [2023-03-31 01:50:27,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:27,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338094833] [2023-03-31 01:50:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:27,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:27,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:27,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338094833] [2023-03-31 01:50:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338094833] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:27,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:27,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548647442] [2023-03-31 01:50:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:27,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:27,665 INFO L87 Difference]: Start difference. First operand 641 states and 998 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:28,724 INFO L93 Difference]: Finished difference Result 1618 states and 2555 transitions. [2023-03-31 01:50:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:28,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 01:50:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:28,728 INFO L225 Difference]: With dead ends: 1618 [2023-03-31 01:50:28,728 INFO L226 Difference]: Without dead ends: 1038 [2023-03-31 01:50:28,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:28,730 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 411 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:28,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1210 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:28,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2023-03-31 01:50:28,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2023-03-31 01:50:28,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 1032 states have (on average 1.568798449612403) internal successors, (1619), 1032 states have internal predecessors, (1619), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1622 transitions. [2023-03-31 01:50:28,768 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1622 transitions. Word has length 138 [2023-03-31 01:50:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:28,768 INFO L495 AbstractCegarLoop]: Abstraction has 1036 states and 1622 transitions. [2023-03-31 01:50:28,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1622 transitions. [2023-03-31 01:50:28,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-03-31 01:50:28,770 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:28,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:28,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:50:28,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:28,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:28,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1458239284, now seen corresponding path program 1 times [2023-03-31 01:50:28,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:28,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061998264] [2023-03-31 01:50:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:28,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:28,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061998264] [2023-03-31 01:50:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061998264] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:28,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:28,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:28,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519049553] [2023-03-31 01:50:28,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:28,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:28,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:28,953 INFO L87 Difference]: Start difference. First operand 1036 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:30,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:30,025 INFO L93 Difference]: Finished difference Result 2659 states and 4198 transitions. [2023-03-31 01:50:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:30,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 140 [2023-03-31 01:50:30,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:30,031 INFO L225 Difference]: With dead ends: 2659 [2023-03-31 01:50:30,031 INFO L226 Difference]: Without dead ends: 1697 [2023-03-31 01:50:30,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:30,033 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 396 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:30,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1175 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2023-03-31 01:50:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1695. [2023-03-31 01:50:30,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1691 states have (on average 1.5688941454760497) internal successors, (2653), 1691 states have internal predecessors, (2653), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2656 transitions. [2023-03-31 01:50:30,105 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2656 transitions. Word has length 140 [2023-03-31 01:50:30,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:30,106 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2656 transitions. [2023-03-31 01:50:30,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2656 transitions. [2023-03-31 01:50:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-03-31 01:50:30,109 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:30,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:50:30,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:30,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1326993140, now seen corresponding path program 1 times [2023-03-31 01:50:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811752644] [2023-03-31 01:50:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:30,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811752644] [2023-03-31 01:50:30,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811752644] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:30,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:30,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556068064] [2023-03-31 01:50:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:30,277 INFO L87 Difference]: Start difference. First operand 1695 states and 2656 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:31,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:31,418 INFO L93 Difference]: Finished difference Result 4356 states and 6851 transitions. [2023-03-31 01:50:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:31,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 142 [2023-03-31 01:50:31,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:31,428 INFO L225 Difference]: With dead ends: 4356 [2023-03-31 01:50:31,428 INFO L226 Difference]: Without dead ends: 2748 [2023-03-31 01:50:31,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:31,433 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 381 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:31,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1140 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-03-31 01:50:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2746. [2023-03-31 01:50:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 2742 states have (on average 1.561998541210795) internal successors, (4283), 2742 states have internal predecessors, (4283), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 4286 transitions. [2023-03-31 01:50:31,554 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 4286 transitions. Word has length 142 [2023-03-31 01:50:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:31,554 INFO L495 AbstractCegarLoop]: Abstraction has 2746 states and 4286 transitions. [2023-03-31 01:50:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 4286 transitions. [2023-03-31 01:50:31,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-03-31 01:50:31,560 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:31,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:31,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:50:31,562 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:31,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1963673240, now seen corresponding path program 1 times [2023-03-31 01:50:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584708306] [2023-03-31 01:50:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:31,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:31,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584708306] [2023-03-31 01:50:31,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584708306] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:31,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:31,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:31,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047506462] [2023-03-31 01:50:31,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:31,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:31,744 INFO L87 Difference]: Start difference. First operand 2746 states and 4286 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:32,917 INFO L93 Difference]: Finished difference Result 6957 states and 10852 transitions. [2023-03-31 01:50:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2023-03-31 01:50:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:32,930 INFO L225 Difference]: With dead ends: 6957 [2023-03-31 01:50:32,930 INFO L226 Difference]: Without dead ends: 4311 [2023-03-31 01:50:32,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:32,935 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 366 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:32,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1105 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:50:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4311 states. [2023-03-31 01:50:33,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4311 to 4309. [2023-03-31 01:50:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4309 states, 4305 states have (on average 1.5463414634146342) internal successors, (6657), 4305 states have internal predecessors, (6657), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:33,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4309 states to 4309 states and 6660 transitions. [2023-03-31 01:50:33,106 INFO L78 Accepts]: Start accepts. Automaton has 4309 states and 6660 transitions. Word has length 144 [2023-03-31 01:50:33,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:33,106 INFO L495 AbstractCegarLoop]: Abstraction has 4309 states and 6660 transitions. [2023-03-31 01:50:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 3 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4309 states and 6660 transitions. [2023-03-31 01:50:33,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-03-31 01:50:33,127 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:33,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:33,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:50:33,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:33,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:33,129 INFO L85 PathProgramCache]: Analyzing trace with hash 639464762, now seen corresponding path program 1 times [2023-03-31 01:50:33,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661894952] [2023-03-31 01:50:33,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:33,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:33,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:33,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661894952] [2023-03-31 01:50:33,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661894952] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:33,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:33,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:50:33,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753868226] [2023-03-31 01:50:33,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:33,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:50:33,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:33,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:50:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:50:33,426 INFO L87 Difference]: Start difference. First operand 4309 states and 6660 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:35,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:35,446 INFO L93 Difference]: Finished difference Result 25277 states and 38979 transitions. [2023-03-31 01:50:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 01:50:35,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 146 [2023-03-31 01:50:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:35,506 INFO L225 Difference]: With dead ends: 25277 [2023-03-31 01:50:35,507 INFO L226 Difference]: Without dead ends: 21072 [2023-03-31 01:50:35,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-03-31 01:50:35,517 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 4371 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:35,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 4933 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:50:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21072 states. [2023-03-31 01:50:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21072 to 8418. [2023-03-31 01:50:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8418 states, 8414 states have (on average 1.5253149512716901) internal successors, (12834), 8414 states have internal predecessors, (12834), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8418 states to 8418 states and 12837 transitions. [2023-03-31 01:50:36,323 INFO L78 Accepts]: Start accepts. Automaton has 8418 states and 12837 transitions. Word has length 146 [2023-03-31 01:50:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 8418 states and 12837 transitions. [2023-03-31 01:50:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8418 states and 12837 transitions. [2023-03-31 01:50:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:50:36,338 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:36,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:36,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:50:36,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:36,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2122879326, now seen corresponding path program 1 times [2023-03-31 01:50:36,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:36,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050226180] [2023-03-31 01:50:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:36,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:36,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050226180] [2023-03-31 01:50:36,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050226180] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296661936] [2023-03-31 01:50:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:36,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:36,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:36,548 INFO L87 Difference]: Start difference. First operand 8418 states and 12837 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:38,624 INFO L93 Difference]: Finished difference Result 24623 states and 37534 transitions. [2023-03-31 01:50:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2023-03-31 01:50:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:38,653 INFO L225 Difference]: With dead ends: 24623 [2023-03-31 01:50:38,654 INFO L226 Difference]: Without dead ends: 16316 [2023-03-31 01:50:38,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:38,666 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 463 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:38,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1123 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:50:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16316 states. [2023-03-31 01:50:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16316 to 16314. [2023-03-31 01:50:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16314 states, 16310 states have (on average 1.5148988350705088) internal successors, (24708), 16310 states have internal predecessors, (24708), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16314 states to 16314 states and 24711 transitions. [2023-03-31 01:50:39,844 INFO L78 Accepts]: Start accepts. Automaton has 16314 states and 24711 transitions. Word has length 150 [2023-03-31 01:50:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:39,844 INFO L495 AbstractCegarLoop]: Abstraction has 16314 states and 24711 transitions. [2023-03-31 01:50:39,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 16314 states and 24711 transitions. [2023-03-31 01:50:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:50:39,874 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:39,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:39,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:50:39,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:39,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2139402398, now seen corresponding path program 1 times [2023-03-31 01:50:39,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:39,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619434834] [2023-03-31 01:50:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:39,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:40,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619434834] [2023-03-31 01:50:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619434834] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654457668] [2023-03-31 01:50:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:40,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:40,066 INFO L87 Difference]: Start difference. First operand 16314 states and 24711 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:43,177 INFO L93 Difference]: Finished difference Result 46740 states and 70621 transitions. [2023-03-31 01:50:43,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:43,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2023-03-31 01:50:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:43,235 INFO L225 Difference]: With dead ends: 46740 [2023-03-31 01:50:43,236 INFO L226 Difference]: Without dead ends: 30835 [2023-03-31 01:50:43,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:43,256 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 434 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:43,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1091 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:50:43,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30835 states. [2023-03-31 01:50:45,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30835 to 30833. [2023-03-31 01:50:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30833 states, 30829 states have (on average 1.499951344513283) internal successors, (46242), 30829 states have internal predecessors, (46242), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30833 states to 30833 states and 46245 transitions. [2023-03-31 01:50:45,873 INFO L78 Accepts]: Start accepts. Automaton has 30833 states and 46245 transitions. Word has length 150 [2023-03-31 01:50:45,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:45,873 INFO L495 AbstractCegarLoop]: Abstraction has 30833 states and 46245 transitions. [2023-03-31 01:50:45,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 30833 states and 46245 transitions. [2023-03-31 01:50:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:50:45,929 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:45,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:50:45,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:45,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1217947421, now seen corresponding path program 1 times [2023-03-31 01:50:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510227446] [2023-03-31 01:50:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:46,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510227446] [2023-03-31 01:50:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510227446] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:46,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:46,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:50:46,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520794195] [2023-03-31 01:50:46,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:46,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:50:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:50:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:50:46,143 INFO L87 Difference]: Start difference. First operand 30833 states and 46245 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:50:51,268 INFO L93 Difference]: Finished difference Result 87314 states and 130397 transitions. [2023-03-31 01:50:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:50:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2023-03-31 01:50:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:50:51,386 INFO L225 Difference]: With dead ends: 87314 [2023-03-31 01:50:51,386 INFO L226 Difference]: Without dead ends: 57818 [2023-03-31 01:50:51,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:50:51,435 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 416 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:50:51,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 1091 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-03-31 01:50:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57818 states. [2023-03-31 01:50:56,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57818 to 57816. [2023-03-31 01:50:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57816 states, 57812 states have (on average 1.481111187988653) internal successors, (85626), 57812 states have internal predecessors, (85626), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:56,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57816 states to 57816 states and 85629 transitions. [2023-03-31 01:50:56,248 INFO L78 Accepts]: Start accepts. Automaton has 57816 states and 85629 transitions. Word has length 150 [2023-03-31 01:50:56,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:50:56,248 INFO L495 AbstractCegarLoop]: Abstraction has 57816 states and 85629 transitions. [2023-03-31 01:50:56,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 3 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:50:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 57816 states and 85629 transitions. [2023-03-31 01:50:56,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-03-31 01:50:56,337 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:50:56,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:50:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:50:56,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:50:56,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:50:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1594189264, now seen corresponding path program 1 times [2023-03-31 01:50:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:50:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441423332] [2023-03-31 01:50:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:50:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:50:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:50:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:50:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:50:56,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:50:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441423332] [2023-03-31 01:50:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441423332] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:50:56,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:50:56,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 01:50:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800001935] [2023-03-31 01:50:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:50:56,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 01:50:56,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:50:56,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 01:50:56,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:50:56,848 INFO L87 Difference]: Start difference. First operand 57816 states and 85629 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:51:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:51:10,141 INFO L93 Difference]: Finished difference Result 178652 states and 261398 transitions. [2023-03-31 01:51:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 01:51:10,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 150 [2023-03-31 01:51:10,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:51:10,373 INFO L225 Difference]: With dead ends: 178652 [2023-03-31 01:51:10,373 INFO L226 Difference]: Without dead ends: 125882 [2023-03-31 01:51:10,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-03-31 01:51:10,430 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 2460 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-03-31 01:51:10,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 3172 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-03-31 01:51:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125882 states. [2023-03-31 01:51:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125882 to 118776. [2023-03-31 01:51:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118776 states, 118772 states have (on average 1.4537180480247869) internal successors, (172661), 118772 states have internal predecessors, (172661), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:51:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118776 states to 118776 states and 172664 transitions. [2023-03-31 01:51:22,670 INFO L78 Accepts]: Start accepts. Automaton has 118776 states and 172664 transitions. Word has length 150 [2023-03-31 01:51:22,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:51:22,670 INFO L495 AbstractCegarLoop]: Abstraction has 118776 states and 172664 transitions. [2023-03-31 01:51:22,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 7 states have internal predecessors, (147), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 01:51:22,670 INFO L276 IsEmpty]: Start isEmpty. Operand 118776 states and 172664 transitions. [2023-03-31 01:51:23,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-03-31 01:51:23,014 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:51:23,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 01:51:23,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:51:23,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:51:23,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:51:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash -316503114, now seen corresponding path program 1 times [2023-03-31 01:51:23,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:51:23,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99316911] [2023-03-31 01:51:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:51:23,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:51:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:51:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:51:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:51:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:51:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99316911] [2023-03-31 01:51:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99316911] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:51:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:51:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:51:23,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521652412] [2023-03-31 01:51:23,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:51:23,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:51:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:51:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:51:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:51:23,217 INFO L87 Difference]: Start difference. First operand 118776 states and 172664 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)